Qualcomm Senior Systems Engineer interview questions

I was recruited in a recruiting event with more than twenty candidates for an unclear number of positions. Each candidate has to go through a set of 6-8 back-to-back interviews, each 30-minute long. The interviews very technical, except for one with HR representative. The scope of the questions asked in the interviews spanned from digital communications, information theory, signal processing, and probability. The same interviewer was asking questions in different fields of study.

Technical interviews with 5 employees and answered various questions from career path to background